7778940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{9973}}^1$

素因数の和:9998

約数の個数: 48

約数和(自身を含む): 23458848

約数和(自身を除く): 15679908

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 9973, 19946, 29919, 39892, 49865, 59838, 99730, 119676, 129649, 149595, 199460, 259298, 299190, 388947, 518596, 598380, 648245, 777894, 1296490, 1555788, 1944735, 2592980, 3889470, 7778940]

約数ペア:

[(1, 7778940), (2, 3889470), (3, 2592980), (4, 1944735), (5, 1555788), (6, 1296490), (10, 777894), (12, 648245), (13, 598380), (15, 518596), (20, 388947), (26, 299190), (30, 259298), (39, 199460), (52, 149595), (60, 129649), (65, 119676), (78, 99730), (130, 59838), (156, 49865), (195, 39892), (260, 29919), (390, 19946), (780, 9973)]